Lower Paxton Township Stormwater Requirements
What triggers a stormwater plan for a home project in Lower Paxton Township, and what to expect.
Lower Paxton Township, just east of Harrisburg, requires stormwater management for many residential projects that add impervious surface. For homeowners in Colonial Park, Paxtonia, and throughout the Township, that can include an addition, garage, pool, patio, or driveway expansion. This page gives a general overview so you know what to expect before you apply for a permit.
When a Stormwater Plan Is Required
Like most Pennsylvania municipalities, Lower Paxton Township bases its stormwater requirements primarily on new impervious area, meaning roofs, pavement, patios, pool decks, and other surfaces that do not absorb rainwater. Small projects may be exempt from a submission, while projects above the ordinance’s thresholds need a stormwater management plan, and larger projects carry additional requirements.
The exact thresholds, and how existing and proposed impervious area are counted, are set by the ordinance, so it is worth checking before the design is finalized.
Erosion and sediment control is required for any earth disturbance, even when a project is exempt from stormwater management.
Common Residential Projects
Much of Lower Paxton Township is made up of established suburban neighborhoods, where the most common projects are improvements to existing homes: additions, detached garages, pools, patios, and outdoor living areas.
Because earlier improvements can count toward the total, a property that has been expanded over the years can reach the threshold with a relatively modest project.
One detail can catch homeowners off guard. In Lower Paxton Township, once new impervious area exceeds 1,000 SF, the first 1,000 SF must be managed as well, not just the amount over the threshold. A project slightly over the limit can need noticeably more stormwater management than expected.
What the Review Involves
When a plan is required, the submission typically includes an application, a stormwater management plan and report, and the required fees, which the Township’s engineer reviews. Approval can also involve recorded documents, such as an operation and maintenance agreement, before a permit is issued.
It helps to start early, particularly if a contractor is waiting to begin.
How Elsa Associates Helps
Elsa Associates has prepared stormwater management for residential projects in Lower Paxton Township, including garage, pool, and outdoor living improvements. Elsa Associates determines whether your project triggers the requirement and, when it does, designs a practical solution and prepares the plan, report, and supporting documents for submission.
Not sure where to start? Read Do I Need a Stormwater Plan? or learn more about civil engineering in the Harrisburg area.
Refer to the Ordinance
This page is a general overview, not a substitute for the ordinance, which the Township can amend. Refer to the stormwater management ordinance and application materials on the Lower Paxton Township website for current requirements, or contact the Township directly.
Planning a Project in Lower Paxton Township?
Before you apply for a permit, an early conversation can clarify whether stormwater management applies to your project and what the Township will need to see.